Yasmine's Grandfather Used to Be Able to Recall All Sorts

question 107

Multiple Choice

Yasmine's grandfather used to be able to recall all sorts of random facts.Now that he is slower to do this,Yasmine's mother believes that it is due to the fact that grandpa's brain is shrinking with age.Yasmine,a psychology student,retorts her mother's belief with which piece of evidence?

• A) The adult brain from the age of 40 onwards loses significant numbers of neurons each day.
• B) We are born with all the neurons we will ever have.
• C) If the brain is shrinking, it is due to water loss or myelin and not loss of neurons.
• D) New neurons are formed in certain parts of the brain throughout the lifespan.

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Definitions:

Determination

In the context of statistical analysis, often refers to the degree of variance in observations explained by the model, usually in the form of the coefficient of determination (R-squared).

Estimated Regression Equation

An equation that estimates the relationship between dependent and independent variables in a regression model.

SST

Total Sum of Squares; a measure that quantifies the total variance in the dependent variable that is to be explained by the independent variable(s) in a model.

SSE

Stands for the Sum of Squared Errors, a measure used in statistics to describe the discrepancy between the data and an estimation model.